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Home >> Cadillac >> 1983 >> Seville 5.7 N >> Repair and Diagnosis >> Engine Performance >> System >> DFI Tests W/Codes >> Service Procedure >> Prom >> Removal

Service Procedure: Prom: Removal

  1. Remove ECM as previously described. Insert tip of small blade screwdriver into keyhole of locking tab on PROM access cover. Carefully bend tab slightly to unlock access cover and slide cover off ECM.
  2. Note position of each PROM before removal. Replacement PROM's must be installed in same position as originals. Small reference boss (dimple) on PROM carrier must be aligned with boss dimple) on PROM socket. Grasp clear PROM between thumb and forefinger. Gently rock PROM back and forth while applying upward force to remove PROM and carrier. Repeat procedure to remove green PROM.
NOTE: PROMs are not interchangeable from generation to generation. Be sure part number of replacement PROM matches original PROM.